EP0681577A1 - Verfahren zur herstellung von substituierten 4-hydroxy-kumarine - Google Patents

Verfahren zur herstellung von substituierten 4-hydroxy-kumarine

Info

Publication number
EP0681577A1
EP0681577A1 EP95902843A EP95902843A EP0681577A1 EP 0681577 A1 EP0681577 A1 EP 0681577A1 EP 95902843 A EP95902843 A EP 95902843A EP 95902843 A EP95902843 A EP 95902843A EP 0681577 A1 EP0681577 A1 EP 0681577A1
Authority
EP
European Patent Office
Prior art keywords
acid
catalyst
solvent
substituted
reaction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95902843A
Other languages
English (en)
French (fr)
Other versions
EP0681577B1 (de
Inventor
Allan William Timms
Robert Gandy
Stephen Wilson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemtura UK Ltd
Original Assignee
Great Lakes Fine Chemicals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Great Lakes Fine Chemicals Ltd filed Critical Great Lakes Fine Chemicals Ltd
Publication of EP0681577A1 publication Critical patent/EP0681577A1/de
Application granted granted Critical
Publication of EP0681577B1 publication Critical patent/EP0681577B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/42—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4
    • C07D311/56—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 without hydrogen atoms in position 3

Definitions

  • This invention concerns a process for preparing substituted 4-hydroxycoumarins.
  • R is selected from hydrogen, phenyl, substituted phenyl, alkyl and substituted alkyl groups
  • R is selected from hydrogen, phenyl, substituted phenyl, alkyl and substituted alkyl groups
  • R is selected from hydrogen, phenyl, substituted phenyl, alkyl and substituted alkyl groups
  • EP 177,080 has further modified the process for the manufacture of compounds of general formula (I) by reacting 4-hydroxycoumarin with compounds of general formula (II) in the presence of a catalyst and an organic solvent selected from formic acid, a mixture of formic acid and a least one C2-6 aliphatic acid having a boiling temperature at atmospheric pressure in the range of 60°C to 105°C and a liquid chlorinated alkane having a boiling temperature in the range 60°C to 125°C and effecting the reaction at a temperature in the range of 60°C to the reflux temperature of the reaction mixture.
  • the catalyst is preferably a sulphonic acid, especially selected from methanesulphonic acid, benzenesulphonic acid and p-toluenesulphonic acid.
  • a sulphonic acid especially selected from methanesulphonic acid, benzenesulphonic acid and p-toluenesulphonic acid.
  • An object of this invention is to provide an improved process for preparing substituted 4- hydroxycoumarins of the general formula (I) defined above.
  • the reaction may be conducted in liquid aromatic hydrocarbons, such as toluene, xylene or benzene with similar or even better yields than hitherto and with a considerably easier work-up technique.
  • this invention provides a process for preparing compounds of general formula (I) above wherein R is selected from hydrogen, phenyl, substituted phenyl, alkyl and substituted alkyl groups by reacting 4- hydroxycoumarin and a substituted tetralol of the general formula
  • R as defined above, in the presence of an organic solvent and a catalyst, characterised in that the solvent is an aromatic hydrocarbon.
  • the aromatic hydrocarbon solvent is preferably selected from benzene, toluene and xylene.
  • the reaction is preferably carried out at the boiling point of the solvent and preferably with the azeotropic removal of water.
  • the catalyst for use in the process of the invention is preferably an acid, especially a sulphonic acid.
  • Preferred sulphonic acid catalysts are p- toluenesulphonic acid, benzenesulphonic acid and methanesulphonic acid.
  • Yet another alternative preferred catalyst for use in the invention is a carboxylic acid, especially a strong carboxylic acid, such as trichloroacetic acid.
  • a further improvement which may result from the process of the invention is that better yields of product may be realisable using smaller quantities of the relatively expensive raw material 4-hydroxycoumarin and the catalyst, such as, p-toluenesulphonic acid.
  • the catalyst such as, p-toluenesulphonic acid.
  • the limiting factor in the choice of acid is that it may either be quantitatively removed from the reaction medium by filtration or may have sufficient solubility in the reaction medium that it is removable in the solvent stream on isolation of the product.
  • Toluene (75cm 3 ) was removed by distillation and methanol (100cm 3 ) added. Boiling under reflux was continued for a further 2 hours during which time crystallisation occurred. The suspension was cooled to ⁇ 20°C and aged at this temperature overnight. The suspension was filtered and washed with methanol (2x20cm 3 ). Difenacoum (19.4g; 87.4%) of satisfactory quality was obtained.
  • Brodifacoum was prepared in 94% yield based on 3-(4'-bromodiphenyl- 4-yl)-1,2,3,4-tetrahydro-l-naphthol.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyrane Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Cephalosporin Compounds (AREA)
  • Catalysts (AREA)
EP95902843A 1993-11-30 1994-11-25 Verfahren zur herstellung von substituierten 4-hydroxy-kumarine Expired - Lifetime EP0681577B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9324517 1993-11-30
GB939324517A GB9324517D0 (en) 1993-11-30 1993-11-30 Process for the preparation of substituted 4-hydroxycoumarins
PCT/GB1994/002591 WO1995015322A1 (en) 1993-11-30 1994-11-25 Process for the preparation of substituted 4-hydroxycoumarins

Publications (2)

Publication Number Publication Date
EP0681577A1 true EP0681577A1 (de) 1995-11-15
EP0681577B1 EP0681577B1 (de) 1999-09-15

Family

ID=10745872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95902843A Expired - Lifetime EP0681577B1 (de) 1993-11-30 1994-11-25 Verfahren zur herstellung von substituierten 4-hydroxy-kumarine

Country Status (22)

Country Link
EP (1) EP0681577B1 (de)
JP (1) JPH08509240A (de)
KR (1) KR100369750B1 (de)
CN (1) CN1050602C (de)
AT (1) ATE184600T1 (de)
AU (1) AU674809B2 (de)
BR (1) BR9406075A (de)
CA (1) CA2155127C (de)
DE (1) DE69420702T2 (de)
DK (1) DK0681577T3 (de)
ES (1) ES2138182T3 (de)
FI (1) FI953617A (de)
GB (1) GB9324517D0 (de)
GR (1) GR3032092T3 (de)
HU (1) HU214208B (de)
IN (1) IN178780B (de)
NO (1) NO952901L (de)
RU (1) RU2128657C1 (de)
SG (1) SG52522A1 (de)
TW (1) TW308592B (de)
WO (1) WO1995015322A1 (de)
ZA (1) ZA949470B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0508392A (pt) * 2004-04-08 2007-08-07 Aryx Therapeutics materiais e métodos para tratar distúrbios de coagulação
KR100833652B1 (ko) * 2006-12-28 2008-05-29 한국화학연구원 Ｂａｃｅ-1의 활성을 저해하는 파고지 종자 추출물 또는이로부터 분리된 활성물질을 포함하는 퇴행성 뇌질환의예방 또는 치료용 조성물
CN102070427B (zh) * 2011-01-10 2013-06-05 南通功成精细化工有限公司 一种氟鼠酮及其中间体的合成方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1458670A (en) * 1973-05-23 1976-12-15 Ward Blenkinsop & Co Ltd Anti coagulant 3-tetrahydronaphthyl-4-hydroxy-coumarin deri vatives
DE3373184D1 (en) * 1982-06-14 1987-10-01 Shell Int Research Anti-coagulants of the 4-hydroxycoumarin type, the preparation thereof, and rodenticidal compositions (baits) comprising such anti-coagulants
GB8424317D0 (en) * 1984-09-26 1984-10-31 Shell Int Research 4-hydroxycourmarin derivatives
DE10161978A1 (de) * 2001-12-17 2003-06-26 Bayer Ag Verfahren zur Herstellung von 2-Halogenacyl-3-amino-acrylsäure-derivate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9515322A1 *

Also Published As

Publication number Publication date
GR3032092T3 (en) 2000-03-31
HU9502259D0 (en) 1995-10-30
DE69420702D1 (de) 1999-10-21
JPH08509240A (ja) 1996-10-01
HUT71986A (en) 1996-03-28
EP0681577B1 (de) 1999-09-15
ES2138182T3 (es) 2000-01-01
RU2128657C1 (ru) 1999-04-10
NO952901L (no) 1995-09-21
HU214208B (hu) 1998-01-28
FI953617A0 (fi) 1995-07-28
TW308592B (de) 1997-06-21
ZA949470B (en) 1995-09-14
AU1194095A (en) 1995-06-19
DE69420702T2 (de) 2000-05-31
WO1995015322A1 (en) 1995-06-08
CN1118597A (zh) 1996-03-13
FI953617A (fi) 1995-07-28
IN178780B (de) 1997-06-21
CN1050602C (zh) 2000-03-22
KR100369750B1 (ko) 2005-08-17
CA2155127C (en) 2001-07-24
ATE184600T1 (de) 1999-10-15
GB9324517D0 (en) 1994-01-19
SG52522A1 (en) 1998-09-28
NO952901D0 (no) 1995-07-21
BR9406075A (pt) 1996-01-16
CA2155127A1 (en) 1995-06-08
DK0681577T3 (da) 2000-01-31
AU674809B2 (en) 1997-01-09
KR960700240A (ko) 1996-01-19

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